Operation of Multiple Superconducting Energy Doubler Magnets in Series

In order to understand the operational characteristics of the Energy Doubler, we have started a series of experiments designed to be a practical test of running superconducting accelerator magnets in series. We describe two separate tests in which we have powered two Energy Doubler dipoles in series. Of particular interest are the static losses of the cryostats and the behavior of the coils and cryostats during quenches. The results of the tests show that Energy Doubler magnets can be safely operated near their short sample limit, and that the various safety devices used are adequate to protect the coils and the cryostats from damage.